Laser & Optoelectronics Progress, Volume. 61, Issue 3, 0314005(2024)
Fabrication of High-Performance LIG-Fe3O4 Composite-Based Micro-Supercapacitor by Laser Direct Writing (Invited)
Supercapacitors have advantages such as high power density, extended lifetime, and fast charging rate, which make them good energy-storage devices. Laser-induced graphene (LIG) is a widely used electrode material for double-layer electric capacitors; however, double-layer LIG electric capacitors typically exhibit low electrochemical performance, and the addition of active materials improves the supercapacitor performance. To control the incorporation of active substances, we propose a method for preparing LIG-Fe3O4 composite-based micro-supercapacitor by laser direct writing polyimide (PI) films coated with Fe(NO3)3. The laser treated area will simultaneously undergo PI film ablation and Fe (NO3)3 decomposition, resulting in LIG-Fe3O4 composite electrode composed of Fe3O4 and LIG.The performance of the prepared LIG-Fe3O4 composite-based micro-supercapacitor has been improved by 7.58 times compared to LIG-based micro-supercapacitor. The proposed method establishes a new route for preparing high-performance LIG-based micro-supercapacitor.
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Lu Li, Hao Zhou, Dongdong Han. Fabrication of High-Performance LIG-Fe3O4 Composite-Based Micro-Supercapacitor by Laser Direct Writing (Invited)[J]. Laser & Optoelectronics Progress, 2024, 61(3): 0314005
Category: Lasers and Laser Optics
Received: Sep. 28, 2023
Accepted: Dec. 1, 2023
Published Online: Feb. 20, 2024
The Author Email: Han Dongdong (handongdong@jlu.edu.cn)